LAN9303I-ABZJ SMSC, LAN9303I-ABZJ Datasheet - Page 327
LAN9303I-ABZJ
Manufacturer Part Number
LAN9303I-ABZJ
Description
Ethernet ICs 3 Port 0/100 Ether Switch MII/RMII/Turb
Manufacturer
SMSC
Datasheet
1.LAN9303-ABZJ.pdf
(367 pages)
Specifications of LAN9303I-ABZJ
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
SMSC LAN9303/LAN9303i
13.4.4.11
31:10
BITS
9:0
RESERVED
Drop Probability
These bits specify the discard probability of a packet that has been colored
Yellow by the ingress metering. The probability is given in 1/1024’s. For
example, a setting of 1 is one in 1024, or approximately 0.1%. A setting of
all ones (1023) is 1023 in 1024, or approximately 99.9%.
There are a total of 16 probability entries. Each entry corresponds to a range
of the number of buffers used by the ingress port, as specified in
13.4.4.10, "Buffer Manager Random Discard Table Command Register
(BM_RNDM_DSCRD_TBL_CMD)".
Buffer Manager Random Discard Table Write Data Register (BM_RNDM_DSCRD_TBL_WDATA)
This register is used to write the Random Discard Weight table.
Note: The Random Discard Weight table is not initialized upon reset or power-up. If a random discard
is enabled, the full table should be initialized by the host.
Register #:
1C0Ah
DESCRIPTION
DATASHEET
327
Size:
32 bits
Section
TYPE
R/W
RO
Revision 1.4 (07-07-10)
DEFAULT
000h
-
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